$2,$ A one$-$brick wall must be built. The length of the wall is $15$ m and the Height is $2,7$ m $.$ The wall has a door opening of $2$ m high and $1$ m wide and a window opening of $2$ m wide and $1,5m$ long. Labour cost is R$100/$m$^2$

NOTE: $\frac{1}{2}-$brick walling $(50$ bricks $\frac{?}{m^2})$

$1m^3$ sand $=1000kg(1$ tonne$)$

Calculate the:

$6\mathrm{.}2\mathrm{.}1$ Area of the wall

$(6)$

$6\mathrm{.}2\mathrm{.}2$ Number of bricks required

$(2)$

$6\mathrm{.}2\mathrm{.}3$ Amount of sand required

$(2)$

$6\mathrm{.}2\mathrm{.}4$ Labour cost

$(2)$

$[20]$